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CVE-2020-25671

Status Candidate

Overview

A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations.

Related Files

Ubuntu Security Notice USN-4999-1
Posted Jun 23, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4999-1 - Norbert Slusarek discovered a race condition in the CAN BCM networking protocol of the Linux kernel leading to multiple use-after-free vulnerabilities. A local attacker could use this issue to execute arbitrary code. Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly enforce limits for pointer operations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability, protocol
systems | linux, ubuntu
advisories | CVE-2020-24586, CVE-2020-24587, CVE-2020-24588, CVE-2020-25670, CVE-2020-25671, CVE-2020-25673, CVE-2020-26139, CVE-2020-26141, CVE-2020-26145, CVE-2020-26147, CVE-2021-23133, CVE-2021-29155, CVE-2021-31440, CVE-2021-31829, CVE-2021-33200, CVE-2021-3609
SHA-256 | 608a8996ce80308dbc8f67bc54e75f304a5acf75c42f7825463b1e10f884ffae
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